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Leners Parenteel 103,304, raad May 24, 1870, narrated May 1o, l1ero.

` "The Schedule referred to in these Lettera Patent and making part theSame- To all whom. "it may'concera: I L i Be, it known thatI, H.QCROWELL, of Morgan, rn the county of 'Ashtabulaand State of- Ohio, haveinvented certain new and useful Improvements in Ro,-

tary Injectors for Steam-Boilers; and I do hereby de'- clare thatdrhefollowing is a full and complete descrip- `tion of the same, referencebeing' had to the accompalnylng drawings making part of thisspecification, in w rc l -Figure 1 is a vertical transverse section.

Figure 2, a. vertical longitudinal section.

Figure 3, a detached section.

Like 'letters of reference refer to like parts in the dilierent viewspresented.

`This invention has in view the supplying of steamboilers with-water'while under pressure.aud at such times only when t-he water thereinshall'lavefallcn below the water-line or line of safety, so that a "ceritarn andconstant supply is given to theboiler at the proper time, and atn0 other, the apparatus 4being selfregulati'ng and uniform solong as thepressure of the steam. on the boiler is continued.

Fig. 2 represents a longitudinal section of an oblong square chestoccase, made up of two sections, A B, and connected to each other bymeans of bolts a, pro-v jectedthrough the-flange G, the joint heiligmade tight `by a gasket, D.

Trausverselyin said case is closely iittcd a cylinder, E, iig. V1,'and.retained therein `by the plates F, secured toeach end of the cylinder,and allowed to pro ject over upon the sides ofthe case, as represented.-

In the sides of said cylinder are sunk buckets or cups G, leaving ateach end a section, H, for bearings, and to form the ends of thebuckets.-

` it will be observed,`on examination of iig. 2, that the cylinder doesnot occupy the center of the case longitndiually,'but is a little at oneside, leaving a much larger space at I than at J. The space or charn-`ber I is divided oft' from the cylinder bya' diaphragm, K, against whichthe cylinder is closely fitted'. In the side of said diaphragm isgcut anoblong square opening or port, L, g. 3, which figure represents a sideview'of the diaphragm. Said port is equalin length "to that of thebuckets or cups, but'a little less'transversely. Midway in the upperedge of the portis bored a smallholc, b, the purpose oi. which willpresently be shown.

'li-irc space or chamber' J ,is not 'partitioned oli` by a diaphragm asis chamber I, but is freely open to [the sideof the cylinder.

Having thnsfardescribedthe construction and arrangement of the injector,the practical operation of' the same is as follows, viz: 1

The apparatus isattached to the boiler' so that the V .line a: :rshallbe everr withl the water-`line, and with lout which, the expansion ofsteam would which it is put indirect communication by a pipe lead ingfrom the hole M to the steam-space of the boiler, and by a pipe leadingfrom the hole N to the waterspace, thereby establishing a 'dh-ect andimmediate open rel'ation between tireur, so that the water and steamwill occupy the chamber I, as -it docs in the boiler' by 'vir-ture'ofthe law that water seeks its level under pressure as readily as in theopen air.

The chamber J is putin open communication with -a reservoir of water' bya pipe leading from the hole O `to the water, which is, supposed to beslightly elevated above the line :v x. l

The apparatus on being thus properly adjusted in position, theV cylinderis made to revolve by a belt passing over the pulley l, iig. 1. It willbe obvious that as the cylinder rotates inidiroction of the arrows, the'buckets G will carry water from the watr-chamber'J` around to the portL, and .discharge it into -thc chamber, should the water in the boiler',and conse qnently in the chamber I, be belowA the water-line a: a',

4or rather, it will fiow ont of the buckets int-o the chamber, by virtueof the law ol' gravitation, and thus supply the boiler with water untilit rises again to the water-line. v ,The equilibrium being restoredbetween the wat-er in the chamber and bucket, no more will lcw in, but

`'will be carried around back into the water chamber J,

from whence it was taken.

By this device it'will be evident-that theleast fall of the water in theboiler below the water-line, will cause the water to tlow from thebucket, as it comes in open Vrelation tothe port L, and thereby :causeit to ascend to the water-line or top of the port, the'point of safety.To facilitate the flow of the water from the bucket when revolvingrapidly, the hole ballows the steam to Ienter the bucket in advance of afull discharge of the water, and there-by forces it out into the-chamberin less time than it would iiow out unaided by the steam. By this meansall the water may be forced from the bucket it' that iu the Iboilerisrunning low, andthus a more immediate filling 'oi the boiler iseiiected.

AL certain amount of steam, more or less, according to the amount oflwater left in the cups afterl being ini` open relation 'to the port,will be carried around to the water-chamber,wherein it is condensed, andallows the buckets to bev filled again, which is again returned to theboiler'. i,

To allow the escape of gas and condensed. steam from the water-chamber,a rent, Q, is made in the rooi of the chamber, through which it may passoff t-o thcoutside, and thereby prevent explosion or undue pressnre uponthe water in the chamber and buckets, withforce the.

water back into the reservoir.

i By t-henseof this apparatus a certain. constant, and. l

uniform supply ofwater is nrnishe to the boiler, .not et inter-vals,when the wet'er is foixud to be running low, but at al! times, as eachquantity wili ow into the chamber, thence to the boiler, regularly andVconstantly, more or less, es the demand may be, thereby avoiding alldanger of ex- `piosions in consequenceof low water.

It will 'be obvious, that should the water by any means rise above' thewaiter-line or port L, no water from the onps could iioW- into thechamber, as the equilibrium of the ,uil would be et e, higher level,:ind therefore the water in thecnps could not -ow ont before reaehingthediaphragm above the pere', which would shut off the cup from the port,ann the water cup passes the port, a certain ,est 2 vWitnesses J.' E. BUmzrne's, E. E. WARE.

